Problem: Specifically describe the roles of aldosterone and atrial natriuretic hormone in regulating salt and water in the blood, and in producing hypertonic urine.

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Aldosterone increases the amount of salt reabsorbed into the bloodstream and water to be reabsorbed along with sodium. Aldosterone helps in the increase excretion of potassium, which is another kind of salt, out of the body. 

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Specifically describe the roles of aldosterone and atrial natriuretic hormone in regulating salt and water in the blood, and in producing hypertonic urine.